Nebraska State Historical Society (correspondence, articles, stories, research material, photos, scrapbooks, clippings, and other papers, including theatrical columns from Lincoln Courier and Nebraska State Journal; information about her early career) (http://www.nebraskahistory.org/)

The New York Public Library, Manuscripts and Archives (typescripts with revisions consist of A Chance Meeting, Lucy Gayheart [1935],My Mortal Enemy [1926], and Shadows on the Rock [1931]; also revised galley proofs of Sapphira and the Slave Girl [1940]) (http://www.nypl.org)

Fisher-Wirth, Ann. “Review of Willa Cather and Georgine Milmine’s The Life of Mary Baker G. Eddy and the History of Christian Scienceand David Harrell’s From Mesa Verde to ‘The Professor’s House.'” Legacy 12.1 (1996): 62-65.

Kaye, Frances W. “Review of Merrill Maguire Skaggs’s After the World Broke in Two: The Later Novels of Willa Cather and Jo Ann Middleton’s Willa Cather’s Modernism: A Study of Style and Technique.” Legacy 9.1 (1992): 69-71.

Kaye, Frances W. “Review of Merrill Maguire Skaggs’s After the World Broke in Two: The Later Novels of Willa Cather and Jo Ann Middleton’s Willa Cather’s Modernism: A Study of Style and Technique.” Legacy 9.1 (1992): 69-71.